Math

how do you factor x^2+29xy+100y^2

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asked by Angie
  1. Use the quadratic equation, with a = 1, b = 29 y and c = 100y^2. This will give you two roots that will have "y" in them. Call them y1 and y2.

    The factors will be (x-y1)(x-y2)

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    posted by drwls
  2. you know your factors must look like
    (x + ?y)(x + ?y)
    what two numbers add to 29 and multiply to get 100 ?
    how about 25 and 4
    so
    (x+25y)(x+4y)

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    posted by Reiny

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